/// <summary>
/// Change item status. If status was 'Unchecked' -> change to 'Checked',
/// else if status was 'Checked' -> change to 'Unchecked'
/// </summary>
/// <param name="currentList">Instance of list containing item to be changed</param>
/// <param name="item">Instance of item to be updated</param>
public void ChangeItemStatus(ShoppingList currentList, ShoppingListItem item)
{
ShoppingListItem itemInDB = listDB.ListItems.Where(i => i.ItemID == item.ItemID).FirstOrDefault();
if (itemInDB.Status == 0)
itemInDB.Status = 1;
else
itemInDB.Status = 0;
itemInDB.ModifiedDate = DateTime.Now;
currentList.ModifiedDate = DateTime.Now;
currentList.SortItemsCollection();
listDB.SubmitChanges();
}